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Product Name: IMPA CODE: 591421/591422 VENTILATION TUBE FOR EXPLOSION PROOF VENTILATION FAN Length: 5 mtr Diameter: 200/300 mm Trademark: ROAMER Transport Package: Carton Box Specification: Diameter 200/300 mm Origin: China Product Description EXPLOSION PROOF VENTILATION TUBE,SPECIFICATIONS:DIA 200 x x 5MTRDIA 200 x x10MTRDIA 300 x x 5MTRDIA 300 x x10MTRPHOTO: